Re: Question about the ADF of a scanner.

2009-03-17 Thread Tom Buskey
On Mon, Mar 16, 2009 at 10:26 PM, Dan Jenkins d...@rastech.com wrote:

 Michael ODonnell wrote:
  feed rollers on some scanners and printers.  Basically, they
  get glazed and cannot pull the paper.  Cleaning the feed rollers
  helps sometimes.  Typically I use alcohol to clean them and then,
  if I'm still having a problem, a very, very mild abrasive
 
  I'll second that and as an aside I'll comment (having
  run printing presses and mail processing equipment in a
  previous life) that automated paper handling is a problem
  that gets %0.01 of the respect it deserves.  Considering the
  essentially infinite combination of infuriatingly subtle
  variables (static electricity, fiber quality, temperature,
  moisture [ambient as well as absorbed], friction coefficients,
  roller degradation, fouling by dust/grease/fibers, etc, etc)
  it's a fscking miracle printers work at all, never mind that
  most of the time you don't even have to think about them.
 
 Amen. I've worked in  out of the printing  publishing industry for
 about thirty years. Good pressmen have amazed me getting good print out
 of poor ink and lousy paper and quirky presses.


I ran tests for a company developing a color printer ink jet in 1988.  They
had an issue with jams when wear started.  We tried alcohol  increasing the
force onto the rollers, It required a redesign of the paper path.

With the new path you could crumple the paper, flatten it, then feed it at
300 dpi.  You could feed a piece of cloth through and get a decent print
onto it.
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Re: Question about the ADF of a scanner.

2009-03-17 Thread Dan Jenkins




Tom Buskey wrote:

  I ran tests for a company developing a color printer ink jet in 1988.  They
had an issue with jams when wear started.  We tried alcohol  increasing the
force onto the rollers, It required a redesign of the paper path.

With the new path you could crumple the paper, flatten it, then feed it at
300 dpi.  You could feed a piece of cloth through and get a decent print
onto it.
  

That's impressive. 

When I ponder the number of printers we've seen that jam when facing a
1/16" skew in the paper hopper...



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[OT] Inadvertent HTML post to [Re: Question about the ADF of a scanner.]

2009-03-17 Thread Dan Jenkins




I apologize for inadvertently sending a post in HTML. Not quite sure
how that happened as all posts to gnhlug.org are sent as text, as are
most of my emails to anyone, unless I explicitly override it. Sorry for
any inconvenience.



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Question about the ADF of a scanner.

2009-03-16 Thread Steven W. Orr
I just scored a free HP C6270A scanner with an automatic document feeder. 
Sane seems to talk to it just fine. I'm *almost* happy. The ADF seems to 
jam up. Is there something that I personally can do that's cost effective 
to fix the ADF or am I SOOL?

TIA

-- 
Time flies like the wind. Fruit flies like a banana. Stranger things have  .0.
happened but none stranger than this. Does your driver's license say Organ ..0
Donor?Black holes are where God divided by zero. Listen to me! We are all- 000
individuals! What if this weren't a hypothetical question?
steveo at syslang.net
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Re: Question about the ADF of a scanner.

2009-03-16 Thread Dan Jenkins
Steven W. Orr wrote:
 I just scored a free HP C6270A scanner with an automatic document feeder. 
 Sane seems to talk to it just fine. I'm *almost* happy. The ADF seems to 
 jam up. Is there something that I personally can do that's cost effective 
 to fix the ADF or am I SOOL?
   
I have had this sort of problem with feed rollers on some scanners and 
printers. Basically, they get glazed and cannot pull the paper. Cleaning 
the feed rollers helps sometimes. Typically I use alcohol to clean them 
and then, if I'm still having a problem, a very, very mild abrasive 
(emery cloth, for example) to slightly roughen the roller surface. They 
are other cleaning supplies which used to help, but I don't know whether 
they still exist; they were used to clean typewriter rollers.

Of course, there could be another cause, but this might help.

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Re: Question about the ADF of a scanner.

2009-03-16 Thread Michael ODonnell


 feed rollers on some scanners and printers.  Basically, they
 get glazed and cannot pull the paper.  Cleaning the feed rollers
 helps sometimes.  Typically I use alcohol to clean them and then,
 if I'm still having a problem, a very, very mild abrasive

I'll second that and as an aside I'll comment (having
run printing presses and mail processing equipment in a
previous life) that automated paper handling is a problem
that gets %0.01 of the respect it deserves.  Considering the
essentially infinite combination of infuriatingly subtle
variables (static electricity, fiber quality, temperature,
moisture [ambient as well as absorbed], friction coefficients,
roller degradation, fouling by dust/grease/fibers, etc, etc)
it's a fscking miracle printers work at all, never mind that
most of the time you don't even have to think about them.
 
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Re: Question about the ADF of a scanner.

2009-03-16 Thread Dan Jenkins
Michael ODonnell wrote:
 feed rollers on some scanners and printers.  Basically, they
 get glazed and cannot pull the paper.  Cleaning the feed rollers
 helps sometimes.  Typically I use alcohol to clean them and then,
 if I'm still having a problem, a very, very mild abrasive
 
 I'll second that and as an aside I'll comment (having
 run printing presses and mail processing equipment in a
 previous life) that automated paper handling is a problem
 that gets %0.01 of the respect it deserves.  Considering the
 essentially infinite combination of infuriatingly subtle
 variables (static electricity, fiber quality, temperature,
 moisture [ambient as well as absorbed], friction coefficients,
 roller degradation, fouling by dust/grease/fibers, etc, etc)
 it's a fscking miracle printers work at all, never mind that
 most of the time you don't even have to think about them.
   
Amen. I've worked in  out of the printing  publishing industry for 
about thirty years. Good pressmen have amazed me getting good print out 
of poor ink and lousy paper and quirky presses.

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